Poppet valve

Solenoid operated poppet valve

NG4-Mini
Flange construction Wandfluh standard
◆◆2/2-, 3/2- und 3/4-way E21)
◆◆normally open and normally closed Ex db IIC T6, T4 Gb (Zone 1)
◆◆Qmax = 15 l/min Ex tb III C T80 °C, T130 °C Db (Zone 21)
◆◆Pmax = 350 bar Ex db I Mb bIMb
x II 2 G Ex db IIC T6, T4
x II 2 D Ex tb III C T80 °C, T130 °C
x I M2 Ex db I Mb
Class I, Division 1, Group A, B, C, D T4
    Class II & III, Division I, Group E, F, G T4

DESCRIPTION ​ APPLICATION ​
Direct operated 2/2-, 3/2 and 3/4-way solenoid poppet valve in These valves are suitable for applications in explosion-hazard
sandwich construction. By means of the pressure tight switching areas, open cast and also in mines. Poppet valves are used where
solenoid, the poppet valve spool is opened or closed acting against tight closing functions of the valve are essential like leakage-free
the spring. Due to the poppet spool construction with pressure load holding, clamping or gripping. Miniature values are used
compensation on both sides, the flow through the valve is possible where both, reduced dimensions and weight are important. ​​​​​
in both directions. The metallically sealing seat closes the valve
virtually leak free.The pressure tight encapsulated Ex-protection
solenoid coil prevents an explosion on the inside penetrating to the
outside as well as an ignitable surface temperature. ​​​

CERTIFICATES ​ ACTUATION ​

Surface Mining Standard Z604 Actuation Switching solenoid, wet pin push type,
-25 °C to… -40 °C to… pressure tight
ATEX / UKEX x x x x Execution MKY45 / 18x60 (data sheet 1.1-183)
IECEx x x x x Connection Cable gland for cable Ø 6,5…14 mm
CCC x x x x
EAC x x x x Attention! The UC execution is always supplied without cable
gland
Australia x x x x
MA x x
USA / Canada x x x
PESO x x x
STANDARDS ​
Explosion protection Directive 2014 / 34 / EU (ATEX)
The certificates can be found on www.wandfluh.com
Flameproof enclosure EN / IEC / UL 60079-1, 31
Cable entry EN 60079-0, 1, 7, 15, 31
Mounting interface Wandfluh standard
Protection class EN 60 529
Contamination ISO 4406
efficiency

SYMBOL ​
B.22040b B.22041a B.32040b B.32041a
A A A A

a b a b a b a b
a b a b a b a b
P P P T P T
​ ​ ​ ​
B.3404
A
ab
a o b
a b
P T
​

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 Poppet valve

TYPE CODE ​
2/2 or 3/2 way execution B Exd 2 04 - / / - #
3/4 way execution B Exd 3 4 04 - / / - #

Mounting interface according to Wandfluh standard

Explosion-proof execution, Ex d

2 way (connections) 2
3 way (connections) 3

2 switching positions
4 switching positions

Nominal size 4-Mini

Normally closed Solenoid on A-side 1a

Normally open Solenoid on B-side 0b

Nominal voltage UN 12 VDC G12 115 VAC R115

24 VDC G24 230 VAC R230

Ambient temperature up to:

Nominal power PN 9W L9 40 °C or 90 °C
15 W L15 70 °C

Certification ATEX, UKEX, IECEx, EAC, CCC USA / Canada UC-M187

Australia AU India PE
MA MA

Sealing material NBR

FKM (Viton) D1
NBR -40° C Z604 (only with 15 W)

Design index (subject to change)

1.11-3132

GENERAL SPECIFICATIONS ​ HYDRAULIC SPECIFICATIONS ​

Designation 2/2-, 3/2- and 3/4-way poppet valve Working pressure pmax = 350 bar
Construction Direct operated Maximum volume flow Qmax = 15 l/min, see characteristic
Mounting Flange construction Volume flow direction Any (see characteristic)
Nominal size NG4-Mini according to Wandfluh Leakage oil Poppet type, max. 0,05 ml / min (approx.
standard 1 drop / min) at 30 cSt
Actuation Ex-protection switching solenoid Fluid Mineral oil, other fluid on request
Ambient temperature Operation as T6 Viscosity range 12 mm2/s…320 mm2/s
-25…+40 °C (L9) Temperature range Operation as T6
Operation as T4 fluid NBR -25…+40 °C (L9)
-25…+90 °C (L9) FKM -20…+40 °C (L9)
-25…+70 °C (L15) Operation as T4
-40…+70 °C (L15) NBR -25…+70 °C (L9 or L15)
Weight 3,2 kg (2/2- and 3/2-way) FKM -20…+70 °C (L9 or L15)
5,0 kg (3/4-way) NBR 872 -40…+70 °C (L15)
MTTFd 150 years Contamination Class 20 / 18 / 14
efficiency
Filtration Required filtration grade ß 10…16 ≥ 75,
see data sheet 1.0-50

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 Poppet valve

PERFORMANCE SPECIFICATIONS ​
Oil viscosity u = 30 mm2/s
p = f (Q) Performance limits L15 P = f (Q) Performance limits L9
Measured with nominal voltage -10% at 50 °C Measured with nominal voltage -10% at 40 °C
Execution L9 90 °C on request
p [bar] 2 1
p [bar] 2 1
350 350
K0945_1 K0945_2

300 300 3
250 250
200 200
150 150
100 100
50 50
0 0
0 2 4 6 8 10 12 14 16 Q [l/min] 0 2 4 6 8 10 12 14 16 Q [l/min]

​ ​

Flow direction Flow direction

Type P-A A-T A-P T-A Type P-A A-T A-P T-A
BEXd22041a 1 - 1 - BEXd22041a 1 - 1 -
BEXd22040b 1 - 1 - BEXd22040b 1 - 2 -
BEXd32041a 1 1 2 1 BEXd32041a 1 2 1 1
BEXd32040b 1 1 1 1 BEXd32040b 1 1 3 1
BEXd3404 1 1 1 1 BEXd3404 1 1 1 1

Δp = f (Q) Pressure drop volume flow characteristics ELECTRICAL SPECIFICATIONS ​

p [bar] Protection class IP67

40 Relative duty factor 100 % DF
K0154

35
30 Switching frequency 12'000 / h
25 Voltage tolerance ± 10 % with regard to nominal voltage
20
15 Standard nominal 12 VDC, 24VDC, 115 VAC, 230 VAC
10 voltage AC = 50 to 60 Hz ± 2 %, with built-in
5 two-way rectifier
0
0 2 4 6 8 10 12 14 16 Q [l/min] Standard nominal 9 W, 15 W, 17 W
power
​
Temperature class Nominal power 9 W: T1…T6
Note! With the L15 execution for ambient temperatures up to Nominal power 15 W / 17 W: T1…T4
70 °C, the performance specifications have been
evaluated with an ambient temperature of 50 °C Note! Other electrical specifications see data sheet 1.1-183

Attention! Long periods of non-actuation can reduce the switching

performance

SURFACE TREATMENT ​ SEALING MATERIAL ​

◆◆The valve body is painted with a two component paint NBR or FKM (Viton) as standard, choice in the type code
◆◆The cover, the slip-on coil and the armature tube are zinc-nickel
coated

VALVES INSTALLED ​
The central functioning element is the poppet valve cartridge NG4, data sheet 1.11-2020.

www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 23 42 1.11-3132 E
 Poppet valve

DIMENSIONS ​
3/2-; 2/2-way 3/2-; 2/2-way
9.5
110 5.5
MD=5.2Nm

5.5
101

35
32.5

38
15
31

12
50 10
12 17 18 10 18 50 70 40 60
MD= 9Nm MD= 2.6Nm 156 B..22040b
156 B..32040b
60 8
​
91 54 10 HYDRAULIC CONNECTION ​
146 B..22041a ​
156 B..32041a 28
E = Air bleed screw 14
Dimensions of the solenoid coil see data sheet 1.1-183
P
The distance plate BDP4/12 has to be ordered separately ​
3/4-way A B

14
27
T T0

MANUAL OVERRIDE ​
Screw plug (HB0), no actuation possible
Optionally: HB4,5, HN(K) or HG(K)
→ See data sheet 1.1-311
10 50
82
ACCESSORIES ​
266 Fixing screws Data sheet 1.0-60
​ Threaded subplates Data sheet 2.9-05
PARTS LIST ​ Multi-station subplates Data sheet 2.9-45
Position Article Description Horizontal mounting blocks Data sheet 2.9-85
10 263.6... Solenoid coil MKY45 / 18 x 60 Technical explanations Data sheet 1.0-100
12 154.2603 Knurled nut Ex M18 x 1,5 x 18 Hydraulic fluids Data sheet 1.0-50
15 239.2033 Screw plug HB0 (incl. seal) Filtration Data sheet 1.0-50
17 160.2251 O-ring ID 25,07 x 2,62 (NBR) Relative duty factor Data sheet 1.1-430
18 160.2170 O-ring ID 17,17 x 1,78 (NBR)
INSTALLATION NOTES ​
40 057.4201 Cover
Mounting type Flange mounting
50 173.1450 Distance plate BDP4 / 12
3 fixing holes for
60 246.1113 Socket head screw M4 x 12 DIN 912 socket head screws M5 x 40 or M5 x 50
70 160.2052 O-ring ID 5,28 x 1,78 (NBR) (with distance plate BDP4/12)
160.6052 O-ring ID 5,28 x 1,78 (FKM) Mounting position Any, preferably horizontal
110 111.1080 Cable gland M20 x 1,5 Tightening torque Fixing screws MD = 5,2 Nm (screw
quality 8.8, zinc coated)
MD = 5 Nm knurled nut
COMMISSIONING ​ Note! The length of the fixing screw depends on the base
Attention! When commissioning, the valve must be vented under material of the connection element.
pressure (max. two rotations of screw E).

The solenoid coil must only be put into operation, if the Attention! For stack assembly please observe the remarks in the
requirements of the operating instructions supplied are operating instructions
observed to their full extent. In case of non-observance,
no liability is assumed.
Wandfluh AG Postfach CH-3714 Frutigen
Tel. +41 33 672 72 72 Fax +41 33 672 72 12 sales@wandfluh.com

www.wandfluh.com Illustrations are not binding Data subject to change 4/4 Edition: 23 42 1.11-3132 E